Mom should have thyroid levels checked and not begin taking synthroid
willy-nilly.  Needs to check in with her PCP or endocrinologist.  They need
to know she has been off drug for several mo.  May restart more slowly.
Sometimes can cause cardiac problems if begun at too high a dose too
quickly.  Would continue all tricks to enhance supply and supplement baby
at breast until this is all resolved.  Sincerely, Pat in SNJ